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Andreas Richter, Alexey A. Ekaykin, Matthias O. Willen, Vladimir Ya. Lipenkov, Andreas Groh, Sergey V. Popov, Mirko Scheinert, Martin Horwath, Reinhard Dietrich |
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Title |
Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica |
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Year |
2021 |
Publication |
Frontiers in Earth Science |
Abbreviated Journal |
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Volume |
9 |
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388 |
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411 |
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2296-6463 |
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yes |
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8030 |
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Andrea Spolaor, Beatrice Moroni, Bart?omiej Luks, Adam Nawrot, Marco Roman, Catherine Larose, ?ukasz Stachnik, Federica Bruschi, Krystyna Kozio?, Filip Pawlak, Clara Turetta, Elena Barbaro, Jean-Charles Gallet, David Cappelletti |
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Title |
Investigation on the Sources and Impact of Trace Elements in the Annual Snowpack and the Firn in the Hansbreen (Southwest Spitsbergen) |
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Year |
2021 |
Publication |
Frontiers in Earth Science |
Abbreviated Journal |
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Volume |
8 |
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Abstract |
We present a thorough evaluation of the water soluble fraction of the trace element composition (Ca, Sr, Mg, Na, K, Li, B, Rb, U, Ni, Co, As, Cs, Cd, Mo, Se, Eu, Ba, V, Ge, Ga, Cr, Cr, P, Ti, Mn, Zr, Ce, Zn, Fe, Gd, Y, Pb, Bi, Yb, Al, Nb, Er, Nd, Dy, Sm, Ho, Th, La, Lu, Tm, Pr, Tb, Fe, In, Tl) and their fluxes in the annual snowpack and the firn of the Hansbreen (a tidewater glacier terminating in the Hornsund fjord, southwest Spitsbergen). The trace element samples were obtained from a 3 m deep snow pit dug at the plateau of the glacier (450 m a.s.l.), and from a 2 m deep firn core collected from the bottom of the snow pit. The comparison of elemental fluxes and enrichment factors allowed us to constrain specific summer and wintertime deposition patterns of water soluble trace elements in the southern part of the Svalbard archipelago. Our results suggest that the chemical composition of the Hansbreen (and likely other glaciers where the summit is close to the equilibrium line) is mainly affected by summertime deposition of trace elements from local sources and some volatile elements, which may be transported into the Arctic when polar vortex is weak. The melting of the annual snowpack seems to have a minor influence on the overall chemical signature of the glacier ice. |
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1192 |
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2296-6463 |
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yes |
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Serial |
8606 |
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Title |
Fishing behaviours and fisher effect in decision-making processes when facing depredation by marine predators |
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Year |
2021 |
Publication |
Fisheries Management and Ecology |
Abbreviated Journal |
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Volume |
28 |
Issue |
6 |
Pages |
528-541 |
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109 |
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ISSN |
1365-2400 |
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yes |
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8307 |
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Title |
Per- and Polyfluoroalkyl Substances Are Positively Associated with Thyroid Hormones in an Arctic Seabird |
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Year |
2021 |
Publication |
Environmental Toxicology and Chemistry |
Abbreviated Journal |
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Volume |
40 |
Issue |
3 |
Pages |
820-831 |
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Keywords |
Avian toxicity Ecotoxicology Endocrine-disrupting compounds Per- and polyfluoroalkyl substance Thyroid hormones |
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330 |
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ISSN |
1552-8618 |
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yes |
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7967 |
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Author |
Alison F. Banwell, Rajashree Tri Datta, Rebecca L. Dell, Mahsa Moussavi, Ludovic Brucker, Ghislain Picard, Christopher A. Shuman, Laura A. Stevens |
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Title |
The 32-year record-high surface melt in 2019/2020 on the northern George VI Ice Shelf, Antarctic Peninsula |
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Journal |
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Year |
2021 |
Publication |
The Cryosphere |
Abbreviated Journal |
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Volume |
15 |
Issue |
2 |
Pages |
909-925 |
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Abstract |
In the 2019/2020 austral summer, the surface melt duration and extent on the northern George VI Ice Shelf (GVIIS) was exceptional compared to the 31 previous summers of distinctly lower melt. This finding is based on analysis of near-continuous 41-year satellite microwave radiometer and scatterometer data, which are sensitive to meltwater on the ice shelf surface and in the near-surface snow. Using optical satellite imagery from Landsat 8 (2013 to 2020) and Sentinel-2 (2017 to 2020), record volumes of surface meltwater ponding were also observed on the northern GVIIS in 2019/2020, with 23 % of the surface area covered by 0.62 km3 of ponded meltwater on 19 January. These exceptional melt and surface ponding conditions in 2019/2020 were driven by sustained air temperatures ?0 ?C for anomalously long periods (55 to 90 h) from late November onwards, which limited meltwater refreezing. The sustained warm periods were likely driven by warm, low-speed (?7.5 m s?1) northwesterly and northeasterly winds and not by foehn wind conditions, which were only present for 9 h total in the 2019/2020 melt season. Increased surface ponding on ice shelves may threaten their stability through increased potential for hydrofracture initiation; a risk that may increase due to firn air content depletion in response to near-surface melting. |
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1110 |
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1994-0416 |
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yes |
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7654 |
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Title |
Toward a global strategy for seabird tracking |
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Year |
2021 |
Publication |
Conservation Letters |
Abbreviated Journal |
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Volume |
14 |
Issue |
3 |
Pages |
e12804 |
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Keywords |
biogeography biologging biotelemetry ecological monitoring marine conservation oceanography spatial planning threatened species |
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Abstract |
Electronic tracking technologies revolutionized wildlife ecology, notably for studying the movements of elusive species such as seabirds. Those advances are key to seabird conservation, for example in guiding the design of marine protected areas for this highly threatened group. Tracking data are also boosting scientific understanding of marine ecosystem dynamics in the context of global change. To optimize future tracking efforts, we performed a global assessment of seabird tracking data. We identified and mined 689 seabird tracking studies, reporting on > 28,000 individuals of 216 species from 17 families over the last four decades. We found substantial knowledge gaps, reflecting a historical neglect of tropical seabird ecology, with biases toward species that are heavier, oceanic, and from high-latitude regions. Conservation status had little influence on seabird tracking propensity. We identified 54 threatened species for which we did not find published tracking records, and 19 with very little data. Additionally, much of the existing tracking data are not yet available to other researchers and decision-makers in online databases. We highlight priority species and regions for future tracking efforts. More broadly, we provide guidance toward an ethical, rational, and efficient global tracking program for seabirds, as a contribution to their conservation. |
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388 |
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1755-263X |
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7981 |
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Author |
Alexis Burr |
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Year |
2021 |
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Volume |
Thesis started in October 2021 |
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1216 |
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yes |
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8347 |
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Title |
Differences in foraging habitat result in contrasting fisheries interactions in two albatross populations |
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Year |
2021 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
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Volume |
663 |
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Pages |
197-208 |
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Keywords |
Boat attraction Crozet Diomedea exulans Fisheries Fisheries discards Kerguelen |
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Abstract |
Albatrosses attend fishing boats to feed on fishing discards but are often at risk of accidental bycatch. To examine whether populations (same species) and sexes differ in their overlap with fisheries due to differences in habitat use, we combined the use of recently developed loggers equipped with GPS and boat radar detectors with Automatic Identification System (AIS) data. Our study indicates that incubating wandering albatrosses Diomedea exulans from Crozet and Kerguelen foraged in different habitats although the duration of trips was similar. Both female and male Kerguelen birds took advantage of the large and productive surrounding shelf, whereas Crozet birds used the small shelf around the islands to a lesser extent. In Crozet, there was segregation between males and females, the latter favouring deeper and warmer waters. The 2 strategies of habitat use led to different overlap and attraction to boats, with Kerguelen birds encountering and attending boats for longer and at closer proximity to the colony than Crozet birds. Crozet females encountered boats at greater distances from the colony than males. Because of their different habitat use and foraging outside exclusive economic zones (EEZ) and further from the colony, Crozet birds attended more non-declared boats (without AIS) than Kerguelen birds. Albatrosses were more attracted by fisheries than cargo vessels and were especially attracted by fishing discards that led them to attend vessels for longer periods for both sexes and populations. The differences found between populations and individuals in terms of habitat specialization and encounter rate of fisheries should be considered for future assessments of risk of bycatch. |
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109 |
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0171-8630, 1616-1599 |
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7940 |
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Author |
Alexandra Lavrillier, Semen Gabyshev, Liudmila Egorova, Galina Makarova, Maia Lomovtseva-Adukanova |
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Title |
Analysing Non-Existent and Existing Tourisms in Eastern Siberia among the Evenki, Even, Koryak and Itelmen |
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Year |
2021 |
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Abbreviated Journal |
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Issue |
2020/3-2021/1 |
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1127 |
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0755-7809 |
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6582 |
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Author |
Alexandra Lavrillier, Semen Gabyshev |
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Title |
An Indigenous science of the climate change impacts on landscape topography in Siberia |
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Year |
2021 |
Publication |
Ambio |
Abbreviated Journal |
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Volume |
50 |
Issue |
11 |
Pages |
1910-1925 |
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1127 |
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1654-7209 |
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yes |
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Call Number |
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7627 |
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